|Owner|| Sam Winchester (Former)|
Amelia Richardson (Current)
|Episode(s)|| 8.01 We Need to Talk About Kevin|
8.05 Blood Brother
8.08 Hunteri Heroici
8.09 Citizen Fang
11.10 The Devil in the Details
Riot is an Australian Shepherd. After Sam hits Riot with the Impala, he rushes the dog to the veterinary hospital, where the dog gets treated by a vet named Amelia. Sam later accepts his responsibility for the dog, and agrees to take care of him.
After Sam and Amelia start a new life together in Kermit, Texas, Riot becomes the family pet. After Sam left Amelia so she and Don can have a chance at fixing their relationship, she became Riot's caretaker.
Sam remembers when he hit Riot with the Impala. He rushed him to a veterinary hospital, where Amelia is the vet who tends him. Riot sustains some serious internal bleeding and at least two leg fractures. Amelia tells Sam the dog has no owners, and points out his responsibility for the dog, and so Sam agrees to take care of him.
At the motel, Sam has Everett run a new credit card and comments that Riot, who he doesn't yet have a name for and just calls "Dog," has a surgery follow up on Tuesday.
Sam remembers how Riot leads him into Amelia's motel room, which he doesn't want as she thinks he's creepy. However, Amelia calmly pets Riot and they discuss how Riot is recovering well and Sam compliments how skillfully she stitched him up. She also questions why Sam calls him "Dog."
Sam is playing fetch with Riot in the backyard while he and Amelia are discussing Don Richardson's return to Kermit, Texas after he was presumed KIA in Afghanistan.
Riot appears in a flashback when Lucifer tries to convince Sam to say yes and take him as a vessel. Riot is next to Sam and Amelia Richardson who appear to be discussing Don's sudden return to Amelia's life after she believed that he was dead.